"""Pure Gradio Hello World App"""
import gradio as gr


def greet(name: str, enthusiasm: int = 1) -> str:
    """Generate a greeting message.
    
    Args:
        name: The name to greet
        enthusiasm: Number of exclamation marks (1-5)
    
    Returns:
        A personalized greeting
    """
    if not name:
        return "Please enter a name!"
    
    exclamation = "!" * min(max(enthusiasm, 1), 5)
    return f"Hello, {name}{exclamation} Welcome to the Gradio + FastAPI demo!"


# Pure Gradio app - can run standalone or be mounted to FastAPI
with gr.Blocks(title="Hello World Demo") as app:
    gr.Markdown("# 👋 Hello World App")
    gr.Markdown("Enter your name and choose your enthusiasm level!")
    
    with gr.Row():
        with gr.Column():
            name_input = gr.Textbox(
                label="Your Name",
                placeholder="Enter your name here...",
                value="World"
            )
            enthusiasm_slider = gr.Slider(
                minimum=1,
                maximum=5,
                value=1,
                step=1,
                label="Enthusiasm Level"
            )
            greet_btn = gr.Button("Greet Me!", variant="primary")
        
        with gr.Column():
            output = gr.Textbox(
                label="Greeting",
                interactive=False
            )
    
    greet_btn.click(
        fn=greet,
        inputs=[name_input, enthusiasm_slider],
        outputs=output
    )
    
    gr.Examples(
        examples=[
            ["Alice", 3],
            ["Bob", 1],
            ["Charlie", 5],
        ],
        inputs=[name_input, enthusiasm_slider],
    )


# This allows the app to run standalone
if __name__ == "__main__":
    app.launch(
        server_name="0.0.0.0",
        server_port=7860,
        share=False
    )